Data:Taiko no Tatsujin: Atsumare! Matsuri da!! Yondaime
This page contains info on data for the game Taiko no Tatsujin: Atsumare! Matsuri da!! Yondaime.
Contents
The Compression
Taiko no Tatsujin: Atsumare! Matsuri da!! Yondaime 's files are contained within DATA.000. The graphic, chart, and sound effect files are compressed under zlib, but the first of every 16 bytes is obfuscated according to the following pattern:
FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA FF FE FF FE FB FA FB FA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA DF DE DF DE DB DA DB DA 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 7F 7E 7F 7E 7B 7A 7B 7A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A 5F 5E 5F 5E 5B 5A 5B 5A
In addition, the first of 16 bytes of the music files are also obfuscated following this pattern, but they're not compressed.
IRXARC.BIN and LIST.BIN, in the root of the disc image, are also obfuscated, but on every byte rather than the first of 16. After deobfuscation, the former file also seems to be compressed under zlib.
The Chart Format
Taiko no Tatsujin: Atsumare! Matsuri da!! Yondaime introduces a new chart format, replacing the one that had been used since Taiko no Tatsujin 3. All values are in little endian and are 4 bytes long. Its structure is rather different compared to what it replaced, including the presence of a "pool" from which the measure sections grab notes from.
Header
Taiko no Tatsujin Yondaime 's chart format always starts with three parameters followed by a blank, 4-byte area. The former are, in order:
- Total Measure Count - Indicates the number of measures on the chart.
- Note Pool Offset - Indicates the offset to the note pool section.
- Total Note Count - Indicates the number of notes on the pool section.
Measure Section
Metadata Area
The metadata area consists of five parameters which apply to a single, 4 beat-long measure.
- Tempo parameters
- Offset - Sets the point when a measure should start scrolling, which is roughly four beats before the measure bar reaches the receptor. It is notated in miliseconds.
- Tempo - Sets the speed in which a measure scrolls. It is set to a natural BPM value.
- Bar Display - Sets whether or not the measure bar, which is placed at the very start of a measure, is displayed. If it's set to 01, it is displayed. If it's set to 00, it is not.
- Branch quota parameters
- Advanced Branch quota - Sets a value in points that the player must obtain in order to enter the Advanced branch in that measure.
- Master Branch quota - Sets a value in points that the player must obtain in order to enter the Master branch in that measure.
- If a measure has no branch transitions, the values of both parameters are set to FF FF FF FF.
Once a metadata area ends, a note grab area immediately follows.
Note Grab Area
The note grab area consists of three parameters, for a length of 0xC. They, in order, are repeated for the following areas, for a total length of 0x48:
- 1P Normal Branch
- 1P Advanced Branch
- 1P Master Branch
- 2P Normal Branch
- 2P Advanced Branch
- 2P Master Branch
These three parameters are as follows:
- Grab Offset - Sets the note in the pool from where the game should grab notes from.
- Search Length - Sets the length of the grabbed area, in notes.
- Remaining Notes - Sets how many notes remain in a branch.
Once the note grab area ends, if the total measure count has not been reached, another metadata area follows. Otherwise, the note pool section follows.
Note Pool Section
The note pool section determines the notes that are used in the chart. Each note consists of 4 parameters, for a total length of 0x10. They are as follows:
- Type - The type of the note. The available values are as follows:
- 0x01 - Small Don (ドン)
- 0x02 - Small Don (ド)
- 0x03 - Small Don (コ)
- 0x04 - Small Ka (カッ)
- 0x05 - Small Ka (カ)
- 0x06 - Drumroll
- 0x07 - Big Don
- 0x08 - Big Ka
- 0x09 - Big Drumroll
- 0x0A - Balloon
- 0x0B - Big Don (Co-op)
- Position - The position of the note in a measure, in 1/48 intervals.
- Hit Value - The number of hits necessary to clear a Balloon note. For all other note types, this value is set to FF FF FF FF.
- Length - The duration, in miliseconds, of a Drumroll, Big Drumroll, or a Balloon note. For all other note types, this value is set to FF FF FF FF.
